But, the Dv/Dp figure of 25.142 seems rather peculiar and certainly not what you'd expect to find in an industrial environment, where manufacturers endeavoured to use "round" numbersAre you certain about your numbers?

So 15mV is the typical offset voltage at zero pressure. For accurate results, you will need to calibrate the sensor output - that is, measure the output voltage at zero pressure, then subtract that voltage from the readings you get. Unfortunately, judging from the graph, the offset may (theoretically) be negative at zero pressure.

Formal verification of safety-critical software, software development, and electronic design and prototyping. See http://www.eschertech.com. Please do not ask for unpaid help via PM, use the forum.